The following principles shall apply to all construction undertaken under the authorization of a Class 3 grading and drainage permit.
(A) New development or redevelopment shall be designed to create the least potential for erosion. The disturbance of slopes greater than 7% should be avoided wherever possible. Natural contours should be followed as closely as possible.
(B) Natural vegetation shall be retained and protected wherever possible. Areas immediately adjacent to natural watercourses, lakes, ponds, and wetlands are to be left undisturbed wherever possible. Temporary crossings of watercourses, when permitted, must include appropriate stabilization measures.
(C) Special precautions shall be taken to prevent damages resultant from any necessary development activity within or adjacent to any stream, lake, pond, or wetland. Preventive measures shall reflect the sensitivity of these areas to erosion and sedimentation.
(D) The smallest practical area of land should be exposed for the shortest practical time during development.
(E) Sediment basins or traps, filter barriers, diversions, and any other appropriate sediment or runoff control measures shall be installed prior to site clearing and grading and maintained to remove sediment from runoff waters from land undergoing development.
(F) In the design of erosion control facilities and practices, aesthetics and the requirements of continuing maintenance must be considered.
(G) Provisions shall be made to accommodate the increased runoff caused by changed soil and surface conditions during and after development. Drainage ways should be designed so that their final gradients and the resultant velocities and rates of discharge will not create additional erosion on site or downstream.
(H) Permanent vegetation and structures shall be installed and functional as soon as practical during development. Disturbed areas shall be stabilized with approved permanent measures within seven calendar days following the end of active disturbance or re-disturbance.
(I) Those areas being converted from agricultural purposes to other land uses shall be vegetated with an appropriate protective cover prior to development.
(J) All waste generated as a result of site development activity shall be properly disposed of and shall be prevented from being carried off the site by either wind or water.
(K) All construction sites shall provide measures to prevent sediment from being tracked onto public or private roadways.
(L) All temporary soil erosion and sediment control practices shall be maintained to function as intended until the contributing drainage area has been permanently stabilized, at which time they shall be removed within 30 days after final site stabilization.
(Ord. passed - -)